1、Designation: F 2561 06An American National StandardStandard Practice forRehabilitation of a Sewer Service Lateral and Its Connectionto the Main Using a One Piece Main and Lateral Cured-in-Place Liner1, 2This standard is issued under the fixed designation F 2561; the number immediately following the
2、designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers requ
3、irements and test methods forthe reconstruction of a sewer service lateral pipe having aninner diameter of 3 to 12 in. and its connection to the main pipehaving an inner diameter of 6 to 24 in. without excavation. Thelateral pipe is accessed remotely from the main pipe and froma lateral cleanout. Th
4、is will be accomplished by the installationof a resin impregnated one-piece main and lateral curedin-place lining (MLCIPL) by means of air or water inflationand inversion. The MLCIPL is pressed against the host pipe bypressurizing a bladder and is held in place until the thermosetresins have cured.
5、When cured, the MLCIPL shall be acontinuous, one piece, tight fitting, corrosion resistant liningextending over a predetermined length of the lateral pipe andthe adjacent section of the main pipe providing a verifiablenon-leaking structural connection and seal.1.2 The values stated in inch-pound uni
6、ts are to be regardedas the standard. The values given in parentheses are providedfor information only.1.3 There is no similar or equivalent ISO Standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of t
7、his standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Particular attentionis drawn to those safety regulations and requirements involvingentering into and working in confined spaces.2. Referenced Documents2.1 ASTM
8、Standards:3D 618 Practice for Conditioning Plastics for TestingD 790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating MaterialsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 3681 Test Method for Chemical Resistance of “Fiber-glass”
9、(GlassFiberReinforced Thermosetting-Resin)Pipe in a Deflected ConditionD 5813 Specification for Cured-In-Place ThermosettingResin Sewer Piping SystemsF 412 Terminology Relating to Plastic Piping SystemsF 1216 Practice for Rehabilitation of Existing Pipelines andConduits by the Inversion and Curing o
10、f a Resin-Impregnated Tube2.2 NASSCO Guidelines:4Recommended Specifications for Sewer Collection SystemRehabilitation3. Terminology3.1 DefinitionsUnless otherwise indicated, definitions arein accordance with Terminology F 412, and abbreviations arein accordance with Terminology D 1600.3.2 Definition
11、s of Terms Specific to This Standard:3.2.1 access pointan existing manhole at either the up-stream or downstream end of a sewer main or a cleanoutlocated on the lateral pipe.3.2.2 bladdera transparent flexible plastic hose that whenpressurized, causes the main sheet to be pressed against themain pip
12、e walls and the lateral tube to invert up into the sewerservice lateral. The bladder joined with the textile liningcreates a liner/bladder assembly.1This practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.67 onTrench
13、less Plastic Pipeline Technology.Current edition approved June 1, 2006. Published June 2006.2The rehabilitation of a sewer service lateral and its connection to the main usinga one-piece main and lateral cured-in-place liner is covered by patents (LMKEnterprises, Inc. 1779 Chessie Lane, Ottawa, IL 6
14、1350). Interested parties areinvited to submit information regarding the identification of acceptable alternativesto this patented item to the Committee on Standards,ASTM Headquarters, 100 BarrHarbor Drive, West Conshohocken, PA 19428-2959. Your comments will receivecareful consideration at a meetin
15、g of the responsible technical committee which mayattend.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4NAS
16、SCO, 1314 Bedford Ave., Suite 201 Baltimore, MD 212081Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.3 inversionthe process of turning a resin-impregnatedtube inside out by the use of air or water pressure.3.2.4 launchercombinati
17、on of a rigid elongated tube andlay-flat hose apparatus where the main bladder is attached andthe main sheet is wrapped around the exterior of the rigidportion. The lateral bladder and lateral liner is drawn inside thehose. The launcher is positioned within the main pipe; airpressure is introduced i
18、nto the hose causing inflation of themain bladder/ sheet and inversion of the lateral bladder tube.3.2.5 lifta portion of the MLCIPL that has cured in aposition such that it has pulled away from the existing pipewall.3.2.6 main and lateral cured in place lining (MLCIPL)atextile including plastic coa
19、ting impregnated by a thermoset-ting resin. This pipe is formed within a portion of the existingmain pipe and the lateral pipe. Therefore, it takes the shape ofan existing TEE or WYE fitting and fits tightly to the existingpipes.3.2.7 resinpolyester, vinyl ester, epoxy or silicate resinsystems being
20、 ambient, steam, or hot water cured.3.2.8 resin slugexcess resin at the upper most end of alateral lining.3.2.9 sewer service laterala pipe servicing a building or aside service.3.2.10 sheeta flat textile sheet that is formed into a 16inches long tube within the main pipe. The sheet is connectedto t
21、he lateral tube forming a one-piece TEE or WYE shapedfitting.3.2.11 transitionthe change in pipe diameter commonlyfound in lateral pipes.4. Significance and Use4.1 This practice is for use by designers and specifiers,regulatory agencies, owners, and inspection organizations whoare involved in the re
22、habilitation of sewer service laterals andits connection to the main through the use of a resin-impregnated tube installed within an existing sewer lateral. Asfor any practice, modifications may be required for specific jobconditions.5. Materials5.1 Tube and Sheet:5.1.1 The main sheet and tube shall
23、 consist of one or morelayers of absorbent textile i.e. needle punched felt or circularknit that meet the requirements of Practice F 1216 and Speci-fication D 5813, Sections 6 and 8. The main sheet and tubeshall be constructed to withstand installation pressures, havesufficient strength to bridge mi
24、ssing pipe segments, and flex-ibility to fit irregular pipe sections. The volume of resin usedshould be sufficient to fill all voids in the tube material atnominal thickness and diameter. The wet-out main sheet andtube shall have a uniform thickness and excess resin distribu-tion that when compresse
25、d at installation pressures will meet orexceed the design thickness after cure.5.1.2 The outside layer of the tube (before inversion) andthe interior of the main sheet (before inflation) shall be coatedwith an impermeable, translucent flexible membrane. The mainsheet before insertion shall be perman
26、ently marked as a lateralidentification correlating to the address of the building thelateral pipe services. The main sheet and tube shall besurrounded by a second impermeable, flexible translucentmembrane (translucent bladder) that will contain the resin andfacilitate vacuum impregnation and monito
27、ring of the resinsaturation during the resin impregnation (wet-out) procedure.5.1.3 The main sheet and lateral tube shall be a one-pieceassembly formed as a TEE or WYE shaped fitting. Nointermediate or encapsulated elastomeric layers shall be in thetextile that may cause delamination in the cured in
28、 place pipe.The main sheet will be flat with one end overlapping thesecond end and sized accordingly to create a circular liningequal to the inner diameter of the main pipe. The lateral tubewill be continuous in length and the wall thickness shall beuniform. The lateral tube will be capable of confo
29、rming tooffset joints, bells, and disfigured pipe sections.5.2 Resin:5.2.1 The resin/liner system shall conform to Test MethodD 3681, 10 000-h test.5.2.2 The resin shall be a corrosion resistant polyester, vinylester, epoxy or silicate resin and catalyst system that whenproperly cured within the com
30、posite pipe assembly, meets therequirements of Practice F 1216, the physical properties herein,and those, which are to be utilized in the design of the MLCIPLfor this project.5.2.3 The resin shall produce a MLCIPL, which will complywith the structural and chemical resistance requirements ofPractice
31、F 1216.6. Design Considerations6.1 The MLCIPL shall be designed in accordance withPractice F 1216,Appendix X1 in respect to the lateral and mainline tubes. If the mainline pipe has been renewed with astructural lining from manhole to manhole, then the mainlineportion of the MLCIPL is designed only f
32、or hydrostaticbuckling.6.1.1 The design for the main and lateral tube shall assumeno bonding to the original pipe.7. Installation Recommendations7.1 Access SafetyPrior to entering access areas such asmanholes or an excavation pit, performing inspection orcleaning operations, an evaluation of the atm
33、osphere to deter-mine the presence of toxic or flammable vapors or lack ofoxygen shall be undertaken in accordance with local, state, orfederal safety regulations.7.1.1 Cleaning and Pre-Inspection and Post Inspection,asper NASSCO (National Association of Sewer Service Compa-nies) Guidelines.7.1.2 Ac
34、cessing the LateralA clean-out must be locatedoutside of the building and upstream at the upper end of thefinished lateral lining. In order to access both the upstream anddownstream sides of the lateral pipe, it is recommended thatthe cleanout isTEE shaped where the lateral and riser pipe join.7.1.3
35、 PluggingThe upstream side of the cleanout shall beplugged during insertion and curing of the MLCIPL assemblyensuring no flows enter the pipe and no air, steam or odors willenter the building. When required, the main pipe flows will beby-passed. The pumping system will be sufficiently sized fornorma
36、l to peak flow conditions. The upstream manhole isF2561062monitored at all times and an emergency deflate system will beincorporated so that the plugs may be removed at any timewithout requiring confined space entry.7.1.4 Inspection of PipelinesThe interior of the pipelineshall be carefully inspecte
37、d to determine the location of anycondition that shall prevent proper installation, such as roots,and collapsed or crushed pipe. These conditions shall be notedso that they can be corrected before installation of theMLCIPL. Experienced personnel trained in locating breaks,obstacles, and service conn
38、ections by closed circuit televisionshall perform inspection of pipelines.7.1.5 Line ObstructionsThe existing service lateral shallbe clear of obstructions that prevent the proper insertion andexpansion of the lining system. Changes in pipe size shall beaccommodated, by sizing the lateral tube accor
39、ding to the pipediameter and condition. Obstructions may include dropped oroffset joints of no more than 20 % of inside pipe diameter.7.2 Resin ImpregnationThe lateral tube and main sheetencapsulated within the translucent bladder (liner/bladder as-sembly) shall be vacuum-impregnated with resin (wet
40、-out)under controlled conditions. The volume of resin used shall besufficient to fill all voids in the textile lining material atnominal thickness and diameter. The volume shall be adjustedby adding 5 to 10 % excess resin for the change in resinvolume due to polymerization and to allow for any migra
41、tionof resin into the cracks and joints in the original pipe. No dryor unsaturated area in the main sheet or lateral tube shall beacceptable upon visual inspection.7.3 MLCIPL InsertionThe lateral tube and inversion blad-der will be inserted into the carrying device. The main bladderis connected to t
42、he launching device by an airtight clampingsystem. The main sheet is wrapped around the “T” launchingdevice and held firmly by four (4) hydrophilic o-rings. Atwo-part 100 % solid epoxy shall be applied as a two-inch(2-in.) wide band in a volume of 300 mL to the main sheet/lateral tube interface. Bot
43、h the launching and carrying deviceare pulled into the pipe using a cable winch. The pull iscomplete when the main sheet/ lateral tube interface is alignedwith the service connection within the main pipe. The lateraltube is completely protected during the pull. The main sheet issupported upon the ri
44、gid “T” launcher that is elevated abovethe pipe invert by means of a rotating skid system. TheMLCIPL assembly shall not be contaminated or diluted byexposure to dirt, debris, or water during the pull.7.4 The bladder is inflated causing the tubular main sheet tobe unfolded and the hydrophilic o-rings
45、 expanded as both arepressed against the main pipe. The lateral tube is invertedthrough the center of the tubular shaped main sheet up into theexisting lateral pipe by the action of the lateral bladder as thetube is fully extended to the designated termination point. Themain and lateral bladders sha
46、ll extend past the terminationpoints of the main sheet and the tube causing ends to remainopen whereby no cutting for reinstatement is required.7.5 CuringAfter insertion is complete, pressure is main-tained pressing the MLCIPL firmly against the inner pipe wall.The MLCIPL is chemically cured at ambi
47、ent temperatures orby a suitable heat source. The heating equipment shall becapable of delivering and circulating a mixture of steam and airor hot water throughout the MLCIPL to uniformly raise thetemperature above the temperature required to cure the resin.The curing of the MLCIPL must take into ac
48、count the existingpipe material, the resin system, and ground conditions (tem-perature, moisture level, and thermal conductivity of the soil).When using a heat source, temperatures shall be monitored andlogged at the upstream end of the lateral lining during the cureand cool down cycles. The manufac
49、turers recommended cureschedule shall be submitted.7.6 MLCIPL ProcessingCuring shall be done withoutpressure interruption with air or a mixture of air and steam forthe proper duration of time per the resin manufacturersrecommendations. When the heat source is removed and thetemperature on both ends of the MLCIPL reaches 100F orless, the processing shall be finished.8. Finish8.1 The finished MLCIPL shall be continuous over theentire length of the rehabilitated sewer service lateral and 16 in.of the main pipe (5 in. on either side of a 6-in. lateral or 6 in.on ei
